S
M
T
W
T
F
S
30
75°
61°
31
72°
57°
1
73°
54°
2
70°
57°
3
77°
64°
4
69°
57°
5
70°
55°
6
77°
55°
7
75°
61°
8
64°
55°
9
66°
52°
10
72°
55°
11
70°
59°
12
73°
55°
13
72°
64°
14
77°
63°
15
73°
55°
16
70°
54°
17
70°
55°
18
70°
50°
19
73°
63°
20
68°
54°
21
72°
48°
22
77°
54°
23
N/A
24
N/A
25
N/A
26
70°
50°
27
73°
52°
28
66°
54°
29
77°
64°
30
76°
53°
1
69°
49°
2
70°
50°
3
66°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in March
March's September 2026 forecast shows daily high temperatures ranging from 66° to 77°, with overnight lows between 46° and 64°. The average high for September is 72° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in March. See also: October | November | December.